package com.wang.controller;

import com.wang.entity.Payment;
import com.wang.lb.ILoadBalancer;
import com.wang.utils.CommonResult;
import lombok.extern.slf4j.Slf4j;
import org.springframework.cloud.client.ServiceInstance;
import org.springframework.cloud.client.discovery.DiscoveryClient;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.client.RestTemplate;

import javax.annotation.Resource;
import java.net.URI;
import java.util.List;

/**
 * @Classname OrderController
 * @Description TODO
 * @Date 2024/10/8 15:59
 * @Created by pc
 */
@RestController
@Slf4j
public class OrderController {

    public static final String PAYMENT_URL = "http://CLOUD-PAYMENT-SERVICE";
    @Resource
    private RestTemplate restTemplate;

    @GetMapping("/consumer/payment/create")
    public CommonResult<Payment> create(Payment payment){
        log.info("*******插入的数据: " + payment);
        // postForObject有三个参数 请求地址  请求参数  返回的对象类型
        return  restTemplate.postForObject(PAYMENT_URL + "/payment/create",payment,CommonResult.class);
    }

    @GetMapping("/consumer/payment/get/{id}")
    public CommonResult<Payment> getPayment(@PathVariable("id")Long id){
        log.info("********查询的id：" + id);
        // getForObject 两个参数  : 请求地址 返回的对象类型
        return restTemplate.getForObject(PAYMENT_URL + "/payment/get/"+id,CommonResult.class);
    }

    @GetMapping("/consumer/payment/getEntity/{id}")
    public CommonResult<Payment> getPayment2(@PathVariable("id") Long id) {
        log.info("*********查询的id : " + id);
        ResponseEntity<CommonResult> entity = restTemplate.getForEntity(PAYMENT_URL + "/payment/get/" + id, CommonResult.class);
        if(entity.getStatusCode().is2xxSuccessful()){
            return entity.getBody();
        }else{
            return new CommonResult<>(444, "操作失败");
        }
    }

    @GetMapping("/consumer/payment/createEntity")
    public CommonResult<Payment> create2(Payment payment) {
        log.info("*******插入的数据 : " + payment);
        ResponseEntity<CommonResult> entity = restTemplate.postForEntity(PAYMENT_URL + "/payment/create", payment, CommonResult.class);
        if (entity.getStatusCode().is2xxSuccessful()) {
            return entity.getBody();
        }else{
            return new CommonResult<>(444, "操作失败");
        }

    }

    @Resource
    private ILoadBalancer loadBalancer;
    @Resource
    private DiscoveryClient discoveryClient;
    // 如果不考虑微服务  80的controller 应该去调用service的接口
    @GetMapping("/consumer/payment/lb")
    public String getPaymentLB() {
        // 获取 CLOUD-PAYMENT-SERVICE 服务中的所有实例
        List<ServiceInstance> instances = discoveryClient.getInstances("CLOUD-PAYMENT-SERVICE");
        if(instances == null || instances.size() <= 00){
            return null;
        }
        ServiceInstance serviceInstance = loadBalancer.instances(instances);
        URI uri = serviceInstance.getUri();
        System.out.println(uri);
        return restTemplate.getForObject(uri+"/payment/lb",String.class);
    }
}
